Electric socket.



F. M. ROSENFELD. ELECTRIC SOCKET. APPLICATION FILED MAR. 1. 1915- 1,157, 181. Patented Oct. 19, 1915.

1X) 141L050 5] nve/ntoz Wands MfiosenfaZd $13 fl is fluozwu s saa FRANCIS M. ROSEFTFELD, OF NEW YORK, N. Y., ASSIGNOR T0 IMPORT SALES GOMPANY, A CORPORATION OF NEW YORK.

ELECTRIC SOCKET.

Specification'of Letters Patent.

Application filed March 1, 1915. Serial No. 11,166.

To all whom it may concern Be it known that I, FRANCIS M. ROSEN- FELD, a citizen of theUnited States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Electric Sockets, of

which the following is a description.

In many classes ,of electrical work, it is extremely desirable to provide a lamp socket of the cheapest possible construction, but which nevertheless shall be'strong, durable and which will'resist the turning efi'ort applied in screwing in a lamp. It is also often desirable to cover the screw socket witha coverin -which may be of insulating material an ornamental in character and within which the socket is securely held. Such condition arises in connection with the sockets used for ornamental illumination by small lamps, such as that ordinarily used on Christmas trees and the like, where it is desired to color or otherwise ornament the shells surrounding the sockets and where .a shell of insulating or other material which may be decorated as desired and within which the socket is securely fastened to prevent longitudinal and rotary motion thereof with respect to the shell.

Referring to the drawing annexed hereto, I have shown at Figurelavertical sectional view of my improved socket; at Fig. 2 a plan view thereofand at Fig. 3 a sectional view taken upon the line 3-3.of Fig. 1. In Fig. 1, 10 indicates the socket, prefer-. ably made of relatively light brass and spun to form threads to receive the base of the lamp. The bottom of the socket is formed of a piece of insulating material 11 through which passes aconducting rivet .12 to which a wire 13 is connected. The other-wire 14 is connected to the side of the socket-10.

Integrally formed with the upper edge of j the socket 10 area plurality ofprojcctions 15. These may be conveniently formed, either by slitting the socket longitudinally andbending out the projections or by stamping out tlie projections without slitting the socket. Projections 15 should be of sufiicient width and strength, so that they may resist the turning effort produced by the screwing in of the lamp in conjunction with the shell, as will be hereinafter described.

At 16I have shown a shell which may be made of fiber, porcelain composition, or any other suitable insulating material. Upon theinner surface of shell 16 are formed a plurality of notches or depressions 17 preferably equal in number to the projections 15- formed upon the socket. The shell 16 is provided with suitable holes to permit the passage of the Wires connected to the socket. In assembling my improved device, the screw threaded socket is first inserted in the shell, the wires passing through the holes provided therefor and the projections 15 are then pushed'outwardly, so as to engage the depressions 17 upon the inside surface of the shell. By reason of the form of the notches and the projections, the socket is efi'ectually prevented from being pulled out of the shell or frombeing rotated therein. It will thus be seen that I have provided a very inexpensive construction and one which is extremely simple and durable.

While I have only shown one form of my invention, I do not desire to be limited to the form herein shown and described, since .it is obvious that many changes may be made,

. without departing from the spirit ofmy invention.

What I claim is: L 1. In a device of the character described, a shell of insulating material provided on its interlor surface with a plurality of recesses and a socket located in said chamber and provided upon its external surface with projections adapted to be forced into said'retute the sole means for preventing. movement of saidsocket with respect to said shell.

.2. In a device of the character described, a cylindrical shell of insulating material provided on its interior surface with a plurality of recesses and a cylindrical socket of 'sheet metal located in said shell and provided at its upper edge with projections in- I tegral therewith and adapted to be forced into said recesses whereby the sand pro ections constitute the sole means for" preventing rotary and longitudinal movement of said socket with respect tosaid shell.

3. In a device of the character'described,

a cylindrical shell of insulating material provided on its interior surface with a plu-E to be forced into said recesses whereby the ra'lity of Wedge-shaped recesses, anda cy- In testimony whereof I have signed this lindrieal socket of sheet metal located in said specification in the presence of two subscrib- 10 sliell and having its upper edge out to form ing Witnesses.

projections integral therewith and adapted FRANCIS ROSENFELD Said projections constitute the sole means for Witnesses:

preventing rotary and longitudinal move- WALTER 'S. JONES, ment of said socket with respect to said shell. ANNA MARIE WALL. 

